//package interfaces;// interfaces/SealedInterface.java
//// (c)2021 MindView LLC: see Copyright.txt
//// We make no guarantees that this code is fit for any purpose.
//// Visit http://OnJava8.com for more book information.
//// {NewFeature} Since JDK 17
//
//sealed interface Ifc permits Imp1, Imp2 {}
//final class Imp1 implements Ifc {}
//final class Imp2 implements Ifc {}
//
//sealed abstract class AC permits X {}
//final class X extends AC {}
